An HVAC assembly for a vehicle. The HVAC assembly has an HVAC case with a rear blower and an evaporator. A rear blower scroll directs airflow generated by the rear blower to a lower portion of the evaporator. An airflow conduit is configured to direct airflow generated by a front blower to an upper portion of the evaporator. An airflow divider separates airflow generated by the rear blower from airflow generated by the front blower. The airflow divider divides the HVAC case into an upper area above the divider and a lower area below the divider. A defrost outlet and a front face outlet are at the upper area of the HVAC case above the divider. A front foot outlet and a rear airflow outlet are at the lower area of the HVAC case below the divider.

When the temperature of a device that is constituted by an electric component or an electronic component and that is arranged below a rear seat exceeds a predetermined value during air-conditioning operation in an internal-air circulation mode, an air-conditioning switching action by which a rear air-conditioning unit is switched from the internal-air circulation mode to an external-air introduction mode is performed, and thereby ventilation of the vehicle cabin is performed. Therefore, before the surrounding temperature of an occupant significantly rises due to heat generated by the device and the occupant feels uncomfortable, by restraining the surrounding temperature from rising through external-air introduction to avoid a situation in which occupant feels uncomfortable, it is possible to maintain comfortableness in the vehicle cabin.

An air-conditioning system for air-conditioning a passenger cell with a front region and a rear region may include a housing including an air inlet, a front outlet, a rear outlet, and a footwell outlet. The system may also include an evaporator for cooling an airflow and a heating device for heating the airflow arranged in the housing. A cold air space, a hot air space, a front mixing space, a layering mixing space, and a rear mixing space may be arranged within the housing. The system may also include a front flap configured to control a first connection opening connecting the hot air space to the front mixing space, a layering flap configured to control a second connection opening connecting the hot air space to the layering mixing space, and a rear flap configured to control a third connection opening connecting the hot air space to the rear mixing space.

A method of heating and cooling at least one zone of a passenger compartment in a vehicle includes the steps of (a) pumping a coolant through an auxiliary coolant loop, (b) changing a temperature of the coolant utilizing a first heat exchanger associated with a refrigerant loop via an expansion device in the cooling mode, and a second heat exchanger associated with the refrigerant loop and (c) moving air through a third heat exchanger through which coolant moves, that third heat exchanger positioned in the passenger compartment, and at least one vent positioned within at least one zone of the passenger compartment.

The disclosure relates to the technical field of air conditioning of vehicles, and in particular provides a vehicle and an air conditioning system thereof. The air conditioning system comprises: an air handling unit having a chamber, the air handling unit being capable of regulating the temperature of air entering the chamber; and an air duct group comprising an air supply duct in communication with an in-cabin space of the vehicle, the air supply duct comprising at least a back-row air duct that releases air to a back-row space in the in-cabin space. The air conditioning system further comprises a bypass air duct, at least part of which does not have an intersecting portion with the air handling unit so as to reduce, at least in part, the resistance due to air having to flow through the air handling unit on the premise of allowing the air to enter the back-row space via the bypass air duct. With such a configuration, it is possible to reduce the resistance when the air is released to the back-row space so as to plan the amount of air to be released to target regions in the in-cabin space.

An air conditioner for a vehicle, includes a blower unit, having a blower fan and a filter, disposed on an outer surface opposite to an interior space in a dash panel of the vehicle. The air conditioner includes a HVAC unit disposed on the outer surface opposite to the interior space to introduce air from the blower unit. The HVAC unit has a cooler and a heater therein to divide the air introduced from the blower unit into cold air and hot air through the cooler and the heater and to discharge the air and has a distribution unit disposed on an inner surface facing the interior space to introduce the cold air and the hot air generated by the HVAC unit. The distribution unit has front and rear seat doors configured to adjust a degree of mixing of the cold air and the hot air.

An air-handling system includes an evaporator core and a downstream arranged heater core disposed in an air-handling casing. A primary flow path is formed within the air-handling casing and leads to a primary zone of a passenger compartment. The primary flow path is divided into a primary cool air pathway bypassing the heater core and a primary warm air pathway passing through the heater core. A secondary flow path is formed within the air-handling casing and leads to a secondary zone of the passenger compartment. The secondary flow path includes a secondary cool air pathway branching from the primary flow path downstream of the evaporator core and a secondary warm air pathway branching from the primary flow path downstream of the heater core. The secondary cool air pathway bypasses the heater core and the secondary warm air pathway passes through the heater core.

In a mobility including a negative pressure space and method for controlling a pressure of the mobility in which the mobility is used a general vehicle in normal times, and when a special situation such as transferring infectious disease patients occurs, an internal space includes a general space and a negative pressure space by a partition wall, so that the infectious disease patients are safely transferred through the negative pressure space and the spread of infectious diseases is prevented. As a result, the usability of a vehicle is increased, and it is possible to respond to such special situation.

A vehicle-body structure includes a floor panel constituting a floor of an occupant space, a center frame disposed to be higher than and away from the floor panel at a vehicle-width-direction central portion of the occupant space and extending in a front-rear direction, and connecting members each extending upward from the floor panel, having an upper portion fixed to the center frame, and connecting the center frame to the floor panel.

An electric-vehicle-body structure includes a floor panel constituting a floor of an occupant space, and a center frame disposed to be higher than and away from the floor panel at a vehicle-width-direction central portion of the occupant space and extending in a front-rear direction. A battery unit includes battery frames disposed at a lower position than the floor panel and extending in the front-rear direction. Such a positional relation is achieved in which the battery frames and the center frame overlap each other in a plan view.